GFAP and autism: The levels of GFAP were marginally increased in autism serum group compared to sham animals (S4 Fig; GFAP, ANOVA, p = 0.0104, Bonferroni’s post-hoc test, p>0.05, Student’s t-test, p = 0.073) and significantly increased compared to control serum group (Bonferroni’s post-hoc test, p<0.05).